diff --git a/justfile b/justfile
index 65f6e4d..2d81f05 100644
--- a/justfile
+++ b/justfile
@@ -28,9 +28,10 @@ down:
 logs:
     docker compose logs -f
 
-# Set version in pyproject.toml
+# Set version in pyproject.toml and web/package.json
 version ver:
     uv run python -c "import re, pathlib; p=pathlib.Path('pyproject.toml'); p.write_text(re.sub(r'^version = \".*\"', 'version = \"{{ ver }}\"', p.read_text(), count=1, flags=re.M))"
+    cd web && npm version {{ ver }} --no-git-tag-version --allow-same-version
     uv lock
 
 # Tag and push a release
diff --git a/web/src/lib/queryPersister.ts b/web/src/lib/queryPersister.ts
index a0bb0f0..f4c0761 100644
--- a/web/src/lib/queryPersister.ts
+++ b/web/src/lib/queryPersister.ts
@@ -1,7 +1,7 @@
 import { createSyncStoragePersister } from "@tanstack/query-sync-storage-persister";
+import { version } from "../../package.json";
 
-// Bump on breaking cache-shape changes to invalidate older clients.
-const BUSTER = "atbbs-v2";
+const BUSTER = version;
 const MAX_AGE = 24 * 60 * 60 * 1000;
 
 const persister = createSyncStoragePersister({